Scope
ISO 3382-2:2015
Room Acoustics Reverberation Time Measurement
This test method specifies procedures for measuring reverberation time and other room acoustic parameters in ordinary rooms such as offices, classrooms, lecture halls, and residential spaces. Reverberation time (T30 or T20) is a fundamental acoustic property that affects speech intelligibility, sound quality, and acoustic comfort. It is essential for designing spaces with appropriate acoustic characteristics, verifying construction specifications, and ensuring compliance with building standards. Architects, acousticians, and building professionals rely on these measurements to evaluate and optimize room acoustic performance. ISO 17025 accreditation guarantees accurate measurements following standardized methodology.
What it measures
- Reverberation time (T30, T20, EDT)
- Frequency-dependent acoustic absorption
- Early decay time and room acoustic parameters
- Clarity index (C50) and definition (D50)
- Speech transmission index (STI) indicators
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NBN EN ISO 3382-1
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DIN EN ISO 3382-1
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BS EN ISO 3382-1
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NF EN ISO 3382-1
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UNI EN ISO 3382-1
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UNE EN ISO 3382-1
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NEN EN ISO 3382-1
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NBN EN 60268-16
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DIN EN 60268-16
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BS EN 60268-16
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NF EN 60268-16
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UNI EN 60268-16
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CEM TH-001
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EURAMET cg-18
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DIN EN 1097-3
DIN EN 12235
DIN EN 14808
DIN EN 14809
DIN EN 13274-8
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(NM_001718: c.1-c.500)
DIN EN 62717
DIN EN ISO 80601-2-72
DIN 51130
ISO 8124-3
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Sound power — engineering method using a
Mechanical mounting of accelerometers (I
Railway brake — anti-slide device (UIC 5
Railway vehicle dynamics — on-track test
> 140
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An lage zur Teil-Akkreditierungsurkunde
ISO 6486-1
ISO 7086-1
UNE-EN ISO 10545-2
UNE-EN ISO 10545-3
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Railway brake — anti-slide device (UIC 5
rs2066845
DIN EN 12681-1
DIN EN ISO 1183-1
ISO 37
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0 mV ≤ U < 200 mV 0,2 V ≤ U < 2 V 2 V ≤
1 mV ≤ U < 220 mV 0,22 V ≤ U < 2,2 V 2,2
0 mV ≤ U ≤ 100 mV 0,1 V < U ≤ 1 V 1 V <
0 μA ≤ I < 200 μA 0,2 mA ≤ I < 2 mA 2 mA
0 μA ≤ I < 220 μA 0,22 mA ≤ I < 2,2 mA 2
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DIN 4772:1979
DIN EN 14538
DIN EN 50130-4: 2015
DIN EN 1926
DIN EN 12372
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UNE 81752
UNE 81550
UNE 81586
UNE 81599
UNE 81587
DIN EN 62471: 2009
IEC 62471: 2006
DIN EN 62717
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DIN EN 62722-2-1
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AUDIOLID, S.L.(Unipersonal)
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UNE-EN ISO 16283-1
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UNE-EN ISO 3382-2
UNE-EN ISO 140-4
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AUDIOTEC INGENIERÍA ACÚSTICA
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UNE-EN ISO 16283-1
UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 3382-2
UNE-EN ISO 140-4
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IEC 61400-12-1
IEC 61400-50-1
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IEC 61400-12-2
IEC 61400-12-3
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BIOTECNAL
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DIN EN ISO 11737-2
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UNE-EN ISO 4833-1
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ÖNORM EN ISO 17638
BS EN ISO 10675-1
ISO 10675-2
ISO 23277
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ISO 21528-2
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UNE-EN ISO 16266
UNE-EN ISO 9308-1
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CALTECNICA INGENIEROS
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(3 ± 0,5) 10-2 mol/mol (5 ± 0,5) 10-
(5 ± 0,5) 10-2 mol/mol
- 80 ˚C a 200 ˚C
- 20 ˚C a < 23 ˚C 23 ˚C a 40 ˚C > 40 ˚C
- 20 ˚C a 60 ˚C
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Salt spray / neutral salt fog test (ISO
ISO 2808
ASTM D 2240
ISO 48-4
ASTM D 4809
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CANDELTEC
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IEC 62471: 2006
IEC 62471-7
UNE-EN 62471
UNE-EN 13032-1
UNE-EN 13032-4
(0,15 ± 0,02) · 10-2 mol/mol (0,50 ± 0,0
(6,0 ± 1,0) · 10-2 mol/mol (11,5 ± 2,0)
(10 ± 2) · 10-6 mol/mol (50 ± 8) · 10-6
(0,15 ± 0,02) · 10-2 mol/mol (0,30 ± 0,0
1,000 ± 0,100
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Whole-body vibration — evaluation of hum
Railway ride comfort for passengers (EN
Railway running behaviour and bogies — t
Railway pass-by noise measurement (ISO 3
Railway interior noise measurement (ISO
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Sound intensity — scanning method (ISO 9
IEC 60695-2-10: 2013
IEC 60695-2-11
IEC 60695-11-5: 2016
IEC 60695-2-12: 2010
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UNE-EN ISO 16283-1
UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 3382-2
ISO 13166
ISO 13164-4
OM H-3 based on ISO 9698:2019
ISO 18589-5:2009 by gas
ISO 10704
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